Studies on acoustic emission signals detected in an oil-immersed pole transformer

被引：0

作者：

Yamamoto T. ^{[1
]}

Nakashima T. ^{[1
]}

Sakoda T. ^{[1
]}

Otsubo M. ^{[1
]}

Kurihara S. ^{[2
]}

Nagasato S. ^{[2
]}

Yarimitsu T. ^{[2
]}

机构：

[1] Department of Electrical and Electronic Engineering, University of Miyazaki, Miyazaki 889-2192, 1-1, Gakuenkibanadai-Nishi

[2] Miyazaki Branch Kyushu Electric Power Co., Inc., Miyazaki 880-8544, 4-2-23, Tachibana St.-Nishi

来源：

IEEJ Transactions on Fundamentals and Materials | 2010年 / 130卷 / 11期

关键词：

Ae sensor; Electrical charge; Oil-immersed pole transformer;

D O I：

10.1541/ieejfms.130.1031

中图分类号：

学科分类号：

摘要：

Acoustic emission (AE) waves owing to partial discharges (PDs) in a 6 kV-oil-immersed pole transformer are influenced by windings, a magnetic core, and insulating paper because the AE waves proceed in all directions. To evaluate the amount of electrical charge due to a PD from AE signals detected by piezoelectric AE sensors, characteristics of AE signals obtained by arranging AE sensors at various positions were evaluated. We also investigated that the intensity ratio of frequency components of a detected AE signal was useful for estimating the rough location of a PD. © 2010 The Institute of Electrical Engineers of Japan.

引用

页码：1031 / 1036

页数：5